Generation of narrowband subpicosecond mid-infrared pulses via difference frequency mixing of chirped near-infrared pulses

The widely used setup for the generation of femtosecond infrared (IR) pulses based on parametric amplifiers (OPAs) and difference frequency mixing (DFM) is extended to produce tunable narrowband mid-IR pulses. The insertion of pairs of silicon prisms after the OPA induces adjustable chirp, which lea...

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Bibliographic Details
Published in:Optics letters 2007-11, Vol.32 (22), p.3339-3341
Main Authors: KOLLER, Florian O, HAISER, Karin, HUBER, Markus, SCHRADER, Tobias E, REGNER, Nadja, SCHREIER, Wolfgang J, ZINTH, Wolfgang
Format: Article
Language:English
Subjects:
Algorithms
Amplifiers, Electronic
Equipment Design
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Infrared Rays
Interferometry
Lasers
Models, Statistical
Models, Theoretical
Nonlinear optics
Optics
Optics and Photonics
Physics
Spectroscopy, Near-Infrared - instrumentation
Spectroscopy, Near-Infrared - methods
Time Factors
Ultrafast processes
optical pulse generation and pulse compression
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Summary:The widely used setup for the generation of femtosecond infrared (IR) pulses based on parametric amplifiers (OPAs) and difference frequency mixing (DFM) is extended to produce tunable narrowband mid-IR pulses. The insertion of pairs of silicon prisms after the OPA induces adjustable chirp, which leads to the generation of narrowband pulses in the DFM stage. Rapid tunability of the mid-IR wavelength via a computer-controllable actuator can be achieved in a range of approximately 200 cm(-1) at a bandwidth of the IR-pulses between approximately 15 and approximately 50 cm(-1) and pulse energies up to 0.4 microJ. The narrowband mid-IR pulses are well suited for 2D IR spectroscopy.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.32.003339